package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.mino.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Autowired
    private MinioProperties minioProperties;

    @Autowired
    private MinioClient minioClient;


    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {

        //判断桶是否存在
        boolean bucketExists = minioClient.bucketExists(
                BucketExistsArgs.builder()
                        .bucket(minioProperties.getBucketName())
                        .build()
        );
        //不存在就创建
        if (!bucketExists) {
            //创建桶
            minioClient.makeBucket(
                    MakeBucketArgs.builder()
                            .bucket(minioProperties.getBucketName())
                            .build()
            );
            //设置访问权限
            String config =
                """
                {
                     "Statement" : [ {
                       "Action" : "s3:GetObject",
                       "Effect" : "Allow",
                       "Principal" : "*",
                       "Resource" : "arn:aws:s3:::%s/*"
                     } ],
                     "Version" : "2012-10-17"
                }
                """.formatted(minioProperties.getBucketName());
            minioClient.setBucketPolicy(
                    SetBucketPolicyArgs.builder()
                            .bucket(minioProperties.getBucketName())
                            .config(config)
                            .build()
            );
        }

        //上传文件
        //定义文件名的命名方式：文件夹/uuid+文件名
        String pictureName =
                new SimpleDateFormat("yyyyMMdd").format(new Date())
                + "/"
                + UUID.randomUUID().toString()
                + "-"
                + file.getOriginalFilename();
        //用putObject方式上传文件
        minioClient.putObject(
                PutObjectArgs.builder()
                        .bucket(minioProperties.getBucketName())
                        .contentType(file.getContentType())
                        .object(pictureName)
                        .stream(file.getInputStream(),file.getSize(),-1)
                        .build()
        );

        //回显地址，并返回
        return String.join("/",minioProperties.getEndPoint(),minioProperties.getBucketName(),pictureName);
    }
}
